Machine for rolling spherical and cylindrical articles



(N0 Model.)

H. WYMAN.

MACHINE FOR ROLLING SPHBRIOAL AND GYLINDRIGAL ARTIGLBS.

Patented Oct. 12, 1886.

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I UNITED STATES PATENT ()EEIcE.

HORACE \VYMAN, OF IVOROESTER, MASSACHUSETTS.

MACHINE FOR ROLLING SPHERICAL AND CYLINDRICAL ARTICLES.

SPECIFICATION forming part of Letters Patent; No. 350,906, dated October12, 1886.

(No model.)

To aZZ whom, it may concern.-

Be it known that I, HoEkoE WYMAN, of XVorcester, county of Worcester,and State of Massachusetts, have invented an Improve ment in Mechanismfor Rolling Spherical and Cylindrical Articles, of which the followingdescription, in connection with the accompanying drawings, is aspecification, like letters on the drawings representing; like parts.

This invention has for its object to provide a mechanism by which toreadily roll into shape from a bar or blank an article cylindrical incross-section, the shape of the said article inlongitudinal sectiondepending altogether on the shape of the forming and diverging reducingand spreading surfaces of the two rolls employed.

In another application, Serial No. 203,050, I have shown one rollcooperating with a concavcd die, both the roll and the die beingprovided with forming-surfaces and with diverging reducing and spreadingsurfaces.

Prior to my invention bars or blanks of metal have been rolled betweenplane surfaces having forming-surfaces and diverging reducing andspreading surfaces, the said surfaces moving in opposite directions.

To increase the speed of operation of the mechanism for doing the classof work referred to, I have provided two rotating rolls, the adjacentsurfaces of which are made movable in opposite directions at the samespeed by means of suitable gearing, the metal being acted upon by therolls being rotated in the space between the contiguous surfacesthereof, a suitable rest supporting the metal during its rotation andwhile being acted upon by the said rolls.

My invention consists, essentially, in the combination of two rollsprovided with forming and with diverging reducing and spreadingsurfaces, the said rolls having their axes of rotation parallel withgearing to rotate the said rolls in the same direction at the samesurface-speed.

Other features of my invention will be set forth in the claims at theend ofthis specification.

Figure 1, in front elevation, represents a machine embodying myinvention; Fig. 2, atop or plan view of Fig. 1; and Fig. 3 shows one ofthe said rolls cut and spread out as a plane surface, in order to showthe configuration of the same.

The apparatus herein shown is adapted to make an article representing acylinder or rod at its center, with a cone at each end having abase ofalarger diameter than the diameter of the rod between the cones, theshape of the article being represented nearly by the shape of the spacebetween the two rolls in Fig. 2.

In the drawings, A represents the framework, upon which is placedjournal boxes A A each of the said journatboxes having attached to it acap, A, held in place by bolts a, the said journal-boxes and capsreceiving between them the shafts b 0 of the die-rolls G D, (shown bybreaking out the caps in Fig. 2,) the said jonrnalboxes being madeadjustable horizontall y by bolts a,extended through ears a of the frameA, and acting against the outer ends of the journal-boxes, the latterbeing confined in adjusted position by strong bolts (6*, having usualheads and nuts. The shaft b has attached to it a toothed gear, b, andthe shaft 0 a toothed gear, 0, the said gears being driven by a pinion,c, on the stud 0, extended from the frame-work, the said pinionhaving attached to its hub a handle, or in practice a beltwheel or gear, by whichto rotate the pinion by power to drive the shafts b c and the attacheddie-rolls O D. The die-rolls O and D are just alike, and, as hereinshown, each die has forming-surfacesf and f and diverging reducing andspreading surfaces f the said rolls each having like surfaces being sosecured to the shafts carrying them, and the shafts being so gearedtogether that the apex 3 of the diverging reducing and spreadingsurfaces of the die-roll C will in the rotation of the rolls meet thecorresponding apex, 5, of the die-roll D, the adjacent surfaces of thesaid rolls moving in opposite directions just about as the said apicesmeet the heated rod 1', (shown by dotted lines, Fig. 1,) to commence thereducing and spreading of the same from its center outward.

The metal rod or blank to be placed be tween the die-rolls to beoperated upon by them will in practice be supported by a rest, 71, inthe space between the dies at apoint below a horizontal lineintersecting the axes of the shafts b c. The apices 7 of the die-rollsshape of the forming-surfaces and of the diverging reducing andspreading surfaces it is possible by two rolls running in the samedirection to give to a rod or bar any desired shape in longitudinalsection, provided the said rod or bar when finished is circular incross-section. So I do not desire to limit my invention to anyparticular shape for the said forming-surfaces or the diverging reducingI and spreading surfaces, for they will be Varied to correspond with theshape of the article to be produced by rolling. The scored or milledsides of the diverging reducing and spreading surfaces materially aid inthe uniform rotation of the bar or blank 1'. Each formingsurfaceterminates with a heel, as at 8, the rod or blank to be reduced beinginserted between the two die-rolls when the heels 8 and the apices 3 and5 are substantially in the position Fig. 1.

I claim- 1. Two die rolls provided with forming and diverging reducingand spreading surfaces, and two parallel shafts carrying the saiddierolls, combined with each other and with gearing to rotate the saiddie-rolls in the same direction, to operate substantially as described.

2. Two die-rolls provided with forming and diverging reducing andspreading surfaces, and two parallel shafts carrying the said dierolls,combined with each other and with gearing to rotate the said die-rollsin the same direction, and with an intermediate rest to support the baror blank being acted upon by the die-rolls, the said die-rolls rotatingthe said rod, substantially as described.

3. Two rotating die-rolls mounted on shafts parallel each to the other,and provided with forming-surfaces and with diverging reducing andspreading surfaces scored or milled to aid in rotating the rod or blankbeing acted upon, combined with each other and with gearing to drive thesaid die-rolls in the same direction at the same surface-speed, the likeapices of the diverging reducing and spreading surfaces meeting the rodor blank at opposite sides at substantially the same time.

In testimony whereof Ihave signed my name to this specification in thepresence of two subscribing witnesses.

HORACE WYMAN.

\Vitnesses:

G. W. GREGORY, F. CUTTER.

